Father stabs son to death for not studying hard enough

A Japanese father allegedly killed his son with a kitchen knife after the boy was failing to study for a school entrance test, according to officials.

The boys father, Kengo Satake, told police he "argued with his son for not studying" for a test to enter a private junior high school, according to public broadcaster NHK.

Reports from AFP say the son, named Ryota, died from blood loss after he was taken to the hospital on Sunday.

Satake maintains that the stabbing was an accident. The father often scolded the son over his studies, as he'd been in the process to enter one of the leading private schools in the Aichi Prefecture, NHK said.

"The father stabbed his son in the chest with a kitchen knife," a police spokesman told AFP, declining to provide any more information.

According to local reports, the boy's mother was at work during the stabbing.

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This general view shows Kitazato University hospital after 13 injured people were brought from the Tsukui Yamayuri En care centre where a knife-wielding man went on a rampage in the city of Sagamihara, Kanagawa prefecture on July 26, 2016. At least 19 people died on July 26 when a knife-wielding man went on the rampage at a Japanese care centre for the mentally disabled, the country's worst mass killing in decades. (TOSHIFUMI KITAMURA/AFP/Getty Images)

Journalists await outside Kitazato University hospital after 13 injured people were brought from the Tsukui Yamayuri En care centre where a knife-wielding man went on a rampage in the city of Sagamihara, Kanagawa prefecture on July 26, 2016. At least 19 people died on July 26 when a knife-wielding man went on the rampage at a Japanese care centre for the mentally disabled, the country's worst mass killing in decades. (TOSHIFUMI KITAMURA/AFP/Getty Images)

A TV reporter explains the situation near the Tsukui Yamayuri En care centre where a knife-wielding man went on a rampage in the city of Sagamihara, Kanagawa prefecture on July 26, 2016. At least 19 people died on July 26 when a knife-wielding man went on the rampage at a Japanese care centre for the mentally disabled, the country's worst mass killing in decades. (TOSHIFUMI KITAMURA/AFP/Getty Images)

A police officer stands guard at the gate of the Tsukui Yamayuri En care centre where a knife-wielding man went on a rampage in the city of Sagamihara, Kanagawa prefecture on July 26, 2016. At least 19 people died on July 26 when a knife-wielding man went on the rampage at a Japanese care centre for the mentally disabled, the country's worst mass killing in decades.(TOSHIFUMI KITAMURA/AFP/Getty Images)

Two ambulances wait at the entrance of Kitazato University hospital after 13 injured people were brought from the Tsukui Yamayuri En care centre where a knife-wielding man went on a rampage in the city of Sagamihara, Kanagawa prefecture on July 26, 2016. At least 19 people died on July 26 when a knife-wielding man went on the rampage at a Japanese care centre for the mentally disabled, the country's worst mass killing in decades. (TOSHIFUMI KITAMURA/AFP/Getty Images)

Journalists await outside Kitazato University hospital after 13 injured people were brought from the Tsukui Yamayuri En care centre where a knife-wielding man went on a rampage in the city of Sagamihara, Kanagawa prefecture on July 26, 2016. At least 19 people died on July 26 when a knife-wielding man went on the rampage at a Japanese care centre for the mentally disabled, the country's worst mass killing in decades. (TOSHIFUMI KITAMURA/AFP/Getty Images)

Journalists await outside Kitazato University hospital after 13 injured people were brought from the Tsukui Yamayuri En care centre where a knife-wielding man went on a rampage in the city of Sagamihara, Kanagawa prefecture on July 26, 2016. At least 19 people died on July 26 when a knife-wielding man went on the rampage at a Japanese care centre for the mentally disabled, the country's worst mass killing in decades. (TOSHIFUMI KITAMURA/AFP/Getty Images)

A police officer stands guard in front of a facility for the disabled, where a deadly attack by a knife-wielding man took place, in Sagamihara, Kanagawa prefecture, Japan, July 26, 2016. REUTERS/Issei Kato

Media members try to report in front of a facility for the disabled, where a deadly attack by a knife-wielding man took place, in Sagamihara, Kanagawa prefecture, Japan, July 26, 2016. REUTERS/Issei Kato

A facility for the disabled (L), where a deadly attack by a knife-wielding man took place, is seen in Sagamihara, Kanagawa prefecture, Japan, July 26, 2016. REUTERS/Issei Kato

SAGAMIHARA, JAPAN - JULY 26: Media members gather in front of Tsukui Yamayuri En care home on July 26, 2016 in Sagamihara, Japan. Nineteen people are dead and 26 others wounded after an attack by a man with a knife at Tsukui Yamayuri En (Tsukui Lily Garden), a care facility for the disabled in Japan early on July 26, 2016. The man, Satoshi Uematsu, already has turned himself into the near-by police station. (Photo by Ken Ishii/Getty Images)

SAGAMIHARA, JAPAN - JULY 26: Media members gather in front of Tsukui Yamayuri En care home on July 26, 2016 in Sagamihara, Japan. Nineteen people are dead and 26 others wounded after an attack by a man with a knife at Tsukui Yamayuri En (Tsukui Lily Garden), a care facility for the disabled in Japan early on July 26, 2016. The man, Satoshi Uematsu, already has turned himself into the near-by police station. (Photo by Ken Ishii/Getty Images)

SAGAMIHARA, JAPAN - JULY 26: Police officers investigate at Tsukui Yamayuri En care home on July 26, 2016 in Sagamihara, Japan. Nineteen people are dead and 26 others wounded after an attack by a man with a knife at a care facility for the disabled in Japan early on July 26, 2016. The man, Satoshi Uematsu, already has turned himself into the near-by police station. (Photo by Ken Ishii/Getty Images)